S
M
T
W
T
F
S
27
74°
58°
28
75°
58°
29
76°
50°
30
72°
50°
1
68°
55°
2
69°
55°
3
73°
54°
4
74°
56°
5
74°
56°
6
72°
56°
7
73°
57°
8
74°
54°
9
75°
52°
10
70°
49°
11
68°
52°
12
66°
53°
13
63°
52°
14
63°
51°
15
66°
52°
16
69°
52°
17
70°
47°
18
70°
43°
19
60°
43°
20
60°
41°
21
59°
43°
22
58°
50°
23
63°
48°
24
66°
42°
25
59°
40°
26
58°
41°
27
57°
48°
28
60°
41°
29
64°
39°
30
64°
38°
31
67°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Locust Valley
Locust Valley's October 2026 forecast shows daily high temperatures ranging from 57° to 76°, with overnight lows between 38° and 58°. The average high for October is 67° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Locust Valley. See also: November | December | January.